Initial import of Cobalt 2.8885 2016-07-27
diff --git a/src/build/download_nacl_toolchains.py b/src/build/download_nacl_toolchains.py
new file mode 100755
index 0000000..c2007d0
--- /dev/null
+++ b/src/build/download_nacl_toolchains.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Shim to run nacl toolchain download script only if there is a nacl dir."""
+
+import os
+import sys
+
+
+def Main(args):
+ # Exit early if disable_nacl=1.
+ if 'disable_nacl=1' in os.environ.get('GYP_DEFINES', ''):
+ return 0
+ script_dir = os.path.dirname(os.path.abspath(__file__))
+ src_dir = os.path.dirname(script_dir)
+ nacl_dir = os.path.join(src_dir, 'native_client')
+ nacl_build_dir = os.path.join(nacl_dir, 'build')
+ download_script = os.path.join(nacl_build_dir, 'download_toolchains.py')
+ if not os.path.exists(download_script):
+ print "Can't find '%s'" % download_script
+ print 'Presumably you are intentionally building without NativeClient.'
+ print 'Skipping NativeClient toolchain download.'
+ sys.exit(0)
+ sys.path.insert(0, nacl_build_dir)
+ import download_toolchains
+
+ # TODO (robertm): Finish getting PNaCl ready for prime time.
+ # BUG:
+ # We remove this --optional-pnacl argument, and instead replace it with
+ # --no-pnacl for most cases. However, if the bot name is the pnacl_sdk
+ # bot then we will go ahead and download it. This prevents increasing the
+ # gclient sync time for developers, or standard Chrome bots.
+ if '--optional-pnacl' in args:
+ args.remove('--optional-pnacl')
+ # By default we don't use PNaCl toolchain yet, unless on ARM, where
+ # there is no other toolchain to build untrusted code at the moment.
+ # So analyze if we're building for ARM, or on SDK buildbot.
+ # TODO(olonho): we need to invent more reliable way to get build
+ # configuration info, to know if we're building for ARM.
+ use_pnacl = False
+ if 'target_arch=arm' in os.environ.get('GYP_DEFINES', ''):
+ use_pnacl = True
+ buildbot_name = os.environ.get('BUILDBOT_BUILDERNAME', '')
+ if buildbot_name.find('pnacl') >= 0 and buildbot_name.find('sdk') >= 0:
+ use_pnacl = True
+ if use_pnacl:
+ print '\n*** DOWNLOADING PNACL TOOLCHAIN ***\n'
+ else:
+ args.append('--no-pnacl')
+
+ # Append the name of the file to use as a version and hash source.
+ # NOTE: While not recommended, it is possible to redirect this file to
+ # a chrome location to avoid branching NaCl if just a toolchain needs
+ # to be bumped.
+ args.append(os.path.join(nacl_dir,'TOOL_REVISIONS'))
+
+ download_toolchains.main(args)
+ return 0
+
+
+if __name__ == '__main__':
+ sys.exit(Main(sys.argv[1:]))
